Train Dates for 1990.
(Note: Belfast YR = Belfast York Road; Belfast CSD = Belfast Central Services Depot; Belfast GVS = Belfast Great Victoria Street; ECS = Empty Coaching Stock; LE = Light Engine; GM = Railway company diesel locomotive; Whitehead generally means the RPSI's own Whitehead Excursion Station.)
| Date | Train/Operation | Loco | Itinerary/Route | Special Notes |
| Running-In | Whitehead - Belfast YR - Whitehead | Hauled carriages 88 and 91 to run in diner 88 after a brake and axlebox overhaul. | ||
| Engine Transfer | Whitehead - Belfast YR - Antrim - Lisburn - Dublin Connolly | |||
| Comeragh | 4: Dublin Heuston - Limerick Junction - Carrick-on-Suir - Bansha 055+4: Bansha - Limerick Junction 055: Limerick Junction - Limerick |
No.4 failed near MP 29 after bursting a boiler tube, rescued by 055. Cravens throughout. |
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| Comeragh | 161: Limerick - Athenry - Galway - Athlone - Portarlington - Dublin Connolly 038: Dublin Connolly - Dundalk 108: Dundalk - Belfast Central 055+4 LE: Limerick - Inchicore |
Cravens until Dundalk when NIR's 108 worked forward with RPSI coaches. | ||
| Comeragh | Belfast Central - Lisburn - Antrim - Londonderry - Belfast YR - Whitehead | 108 and the RPSI set. | ||
| ECS | Dublin Connolly - Mullingar - Athlone - Athenry - Ennis | |||
| Ennis 750 | Ennis - Gort & return (x3) | |||
| Ennis 750 | Ennis - Gort - Ennis (x4) ECS: Ennis - Athenry - Athlone - Mullingar - Dublin Connolly |
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| Yeats Country | Dublin Connolly - Sligo & return. | Loco continued light to Sligo Quay for servicing. | ||
| Film Contract | Dublin Heuston | Coaches posed for Satzenbrau TV commercial. | ||
| Bray Seaside Festival | LE: Connolly - Bray Bray - Greystones & return (x3) Bray - Dublin Connolly |
Charter to the Bray Seaside Festival Committee. No.4 worked from Connolly, and returned wrong road Pearse - Connolly due to an OHLE failure. |
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| Longford Festival Express | Dublin Connolly - Sligo & return | Charter by Longford Festival committee. Loco continued light to Sligo Quay for servicing. |
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| North West Express | Whitehead - Belfast YR - Portrush - Coleraine - Castlerock - Coleraine - Portrush - Belfast YR - Whitehead | No locomotive available in Whitehead to operate a Portrush Flyer. Hauled by NIR 106. | ||
| Sea Breeze | Dublin Connolly - Wexford - Rosslare Harbour - Wexford - Dublin Connolly | |||
| North West Express | Whitehead - Belfast YR - Portrush - Coleraine - Londonderry - Coleraine - Portrush - Belfast YR - Whitehead | No locomotive available in Whitehead to operate a Portrush Flyer. Hauled by NIR 108. | ||
| Running-In | Whitehead - Carrickfergus - Whitehead | Inaugural trip (in grey undercoat with coach 114. | ||
| Running-In | Whitehead - Belfast YR - Whitehead | With 3-coach train. | ||
| Sea Breeze | Dublin Connolly - Wexford - Rosslare Harbour - Wexford - Dublin Connolly. | Due to engineering works the train ran wrong line Dún Laoghaire to Sandycove & Glasthule. | ||
| Running-In | Whitehead - Belfast YR - Whitehead - Carrickfergus - Whitehead - Belfast YR - Whitehead | With 5-coach train. | ||
| Enfield Shuttle | Dublin Connolly - Enfield & return (x2) | |||
| Running-In | LE: Whitehead - Carrickfergus - Whitehead Whitehead - Belfast YR - Larne Harbour - Belfast YR - Whitehead |
With 2-coach train. | ||
| Running-In | Whitehead - Belfast YR - Larne Harbour - Belfast YR - Larne Harbour - Whitehead | With 4-coach train. | ||
| Running-In | Whitehead - Belfast YR - Coleraine - Belfast YR - Whitehead | With 4-coach train. | ||
| Engine Transfer | Dublin Connolly - Lisburn - Antrim - Belfast YR - Whitehead |